How much better is this NVidia Video Card better than mine?

I have been contemplating upgrading my current NVidia 440 GE Force card to something beefier to edit my video, and I would like to know if you could tell me how much better this "GTX760-DC2OC-2GD5 NVIDIA GeForce GTX 760 DirectCU II Overclocked 2048MB GDDR5 PCIe 3.0 x16 Video Card" is, in comparison.

Your card is pretty much an antique these days so anything GTX 760 or higher is gonna be great. But do you have a motherboard with PCIe 3.0? If it supports PCIe 2.0 16x r newer your fine. I have the GTX 760 by the way and it's a nice card - GTX 770 with 4GB is a bit better and still under budget...